Training machine for strength training and rehabilitation

ABSTRACT

A training machine for strength training and rehabilitation includes: a machine frame, a weight carrying frame, a weight package carried by the weight carrying frame, pull or press elements which are turnably provided on the machine frame and which are arranged to be moved backwards and forwards while a selected pre-determined number of weights in the weight package is arranged to be turned about a first axis, alternatively, by connection elements connected to the pull or press elements, and drive members to lift weights by a first force and to lower the weights by a second force, the first force being less than the second force, the weight carrying frame being turnable on the machine frame about a substantially horizontal second axis and the first and second axes being substantially perpendicular to each other.

TECHNICAL FIELD

The present invention is related to a training machine for strengthentraining and rehabilitation of the kind which is defined in thepre-characterising portion of claim 1.

BACKGROUND OF THE INVENTION

Such a training machine is previously known by WO 2006/041821. Thismachine has innumerable parts and is therefore very complicated to aswell its construction as its function.

At many already known training machines for anaerobic training the userexercises intended muscles of the body by performing pre-determinedmovements so that a weight package of a weight stack is lifted orlowered. At efficient training with single-joint movements, as by meansof a biceps curl machine or a leg extension machine, as well as withmultiple-joint movements, as by means of a rowing machine, a bench pressmachine or a leg press machine, it is important that the user of themachine can perform a number of positive and negative working cyclesintended for the personal capacity of the training person. The positivework means that weights are being lifted and the negative work meansthat weights are being lowered.

When a person lowers and lifts the same number of weights of a weightpackage, no consideration is taken to the fact that the negative, i.e.,lowering, force of the person is greater than the positive, i.e.,lifting, force of the person. Therefore, the effect of the trainingmachine is limited. At training with conventional training machines thenumber of weights must be selected with regard to the weaker, liftingstrength of the training person. The same number of weights isthereafter lowered at the negative part of the movement. Hence, thisnumber of weights is not on a level with the negative strength.

A training machine which takes into consideration the different forcesof the training person is known from WO 2007/037755 in which the load isdecreased when initiating the positive movement and is increasedautomatically to its original value at the top of the positive movementjust when the user starts the negative movement. Another similartraining machine is disclosed in U.S. Pat. No. 4,609,189 in which theuser can chose when the weights are to be tilted. However, at thesemachines the whole weight rack is tilted which means that the machinemust use much space when performing this movement.

OBJECT OF THE INVENTION

The object of the present invention is to provide a training machine ofthe type mentioned above which sets aside the above mentioned problems.

The object is achieved by means of a training machine having thecharacteristics defined in claim 1.

Preferred embodiments of the invention have been given thecharacteristics which are apparent in the sub claims.

BRIEF SUMMARY OF THE INVENTION

By means of the training machine according to the invention a compacttraining machine can be achieved which is simple to its construction,yet attaining the advantages at the prior art training machines.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is described in the following with reference to theappended drawings showing preferred embodiments.

FIG. 1 shows a front view of a first embodiment of a training machinefor strength training and rehabilitation according to the invention.

FIG. 2 shows partial front view of the training machine in FIG. 1 wherea person who uses the machine has been deleted and where a seat withsupporting frame is shown with broken lines for clarity.

FIG. 3 shows a side view of the training machine of FIG. 1 in aninitiating position.

FIG. 4 shows a view from the opposite side of the weight portion of thetraining machine of FIG. 1.

FIG. 5 shows a partial sectional view along the line V-V in FIG. 4 of aweight selection device.

FIG. 6 shows a view along the line VI-VI in FIG. 4 of the weight discsof the weight package.

FIG. 7 shows a perspective view of the weight portion of FIG. 4.

FIG. 8 shows a perspective view similar to that of FIG. 7 of anotherembodiment of the weight portion.

FIG. 9 shows a side view of yet another embodiment of the weight packageportion of the training machine.

FIG. 10 shows a view along the line X-X in FIG. 9 of the weights of theweight package.

FIG. 11 shows a side view of a weight selecting setting stick forchoosing weights used in the embodiment of FIG. 9-10.

FIG. 12 shows a perspective view of the embodiment of the weight portionshown in FIG. 9-11.

FIG. 13 shows a perspective view similar to that in FIG. 12 of anotherembodiment of the weight portion.

FIG. 14 shows yet another embodiment of the training machine forstrength training and rehabilitation according to the invention in whichthe weight package is situated behind the user.

FIG. 15 shows a view from behind of the training machine of FIG. 14 in aposition with the weights vertical.

FIG. 16 shows a view from behind of the training machine of FIG. 14 in aposition with the weights inclined.

DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION

Similar details in the different embodiments are denoted with the samereference numerals.

In FIG. 1-7 an embodiment of a training machine 1 for strength trainingand rehabilitation according to the invention is shown, which machinecomprises a weight section 2 and a training section 3 which are mountedwithin a frame comprising inclined beams 4 and 5 as well as beams 6which form a substantially rectangular base and are arranged in asubstantially horizontal plane and fixed connected at the lower part ofsaid sections 2 and 3. The weight section 2 has an inner substantiallyrectangular frame portion 30 (see FIGS. 1 and 7) which is turnablyjournalled in pivots 9 and 10 between outer inclined beams 11, 12 and13, 14, respectively. The inclined beams 11, 12 and 13, 14 formequilateral triangles with the base 6. A shaft 7 is mounted betweenopposite beams 30′ and 30″ of the frame portion 30. A rest plate 8 isfixed to four supporting beams 20 at the frame 30. Circular weightsV₁₋₁₀ which in the rest position abut against the rest plate 8 are fixedon arms 50 which each are provided with a ring 52 at the end opposite tothe weights V₁₋₁₀. The rings 52 are turnably journalled on the shaft 7.A rotatable wheel 51 is mounted on the shaft 7 between the weights V₅and V₆, i.e., substantially at the middle of the shaft 7. A U-formedlifting member A/B is turnably journalled at the outer ends of arms A atthe shaft 7 and is provided with through holes 53 on the bracket B ofthe U-formed member A/B. The holes 53 are so arranged that they in therest position of the weights V₁₋₁₀ on the rest plate 8 will be situatedflush with corresponding holes 54 in the rims of the weights (see FIG.5). A stop shaft 21 is fixed to the outermost weight V₁. Each weightV₁₋₉ is provided with an open recess 70 which is arranged to receive aprotrusion 60 fixed on the opposite side of the weights V₂₋₁₀ to catchnext weight in the selected weight package, when it is lifted up by aperson exercising in the machine. In this embodiment weight V₃ isselected which means that when weight V₃ is lifted it catches weight V₂which in turn catches V₁ and results in that all three weights V₁₋₃ arelifted simultaneously.

A non-elastic wire or belt 22, preferably made by the material Kevlar®,is fixed at a central point on the bracket B of the U-formed member A/B.The belt 22 is lead over the wheel 51 and a small control wheel 15journally fixed at the frame 30 to a connection member 16 where it isconnected to a further non-elastic wire or belt 23, likewise preferablymade by the material Kevlar®. This belt 23 is further connected to themovable parts of the training section 3 of the machine.

A horizontal beam 48 is via vertical beams 49 fixed connected to thebeam 6 of the lower frame portion and the frame construction of thetraining section. The lower ends of the inclined beams 5 are fixedbetween the beam 48 and the inclined beams 4 which in turn are fixed tothe beams 13 and 14 of the weight section. The beams of the frameconstruction of the training machine 1 are advantageously welded to eachother to achieve a solid construction, which shall be able to stand highloads concerning pull and press loads as well as vibrations.

Before lifting and lowering of weights, a weight package (in this caseV₁₋₃) is selected by means of a pin member C. If, e.g., V₁₋₃ is intendedto be lifted, as shown in the drawings, the person sticks the pin memberC through holes 53 and 54 in the bracket B and the weight V₃. Thelifting movement of the selected weight V₃ results in that theprotrusions 60 of the weights V₃ and V₂ in the recesses 70 in theweights, V₂ and V₁, respectively, lifts the weights V₂ and V₁ as welland all three weights V₁₋₃ are then accordingly lifted up simultaneouslywhen the belt 22 is pulled by the person pressing the handles 46 at thetraining section 3. After the pulley 15 the belt extends around afurther pulley 17 (see FIG. 1) and around another pulley 26 mounted onbeams 48, 49. From the pulley 26 the path of the belt 23 extendssubstantially horizontal towards a further pulley 27 mounted on the beam48 and runs thereafter upwards through a pulley 28 of an equalisationdevice 29 to an attachment 23 a which is provided on a protrusion on thebeam 49 b. The equalization device 29 comprises besides the pulley 28 afurther pulley 31, which as the pulley 28 is journalled in freelyhanging linkage arms 32 and 33. A further non-elastic wire or belt 34,preferably made by the material Kevlar®, is mounted at its end by meansof fastening devices 35 to the lower ends of arcuately extending turningarms 36 and 37, respectively. The equalisation device with the furtherbelt 34 has been mounted in a well known way to equalize the power fromthe arms of the training person at loading towards the arms 42 and 43which accordingly do not need to be moved away from the person the samedistance to achieve effect because a person in most cases is not equalstrong in both right and left arm.

At the opposite upper ends of the arms 36 and 37 linkage arms 38 and 39are mounted, which are moveable in all directions, e.g., by means of aball-and-socket joint. The arms 38 and 39 are in turn at their otherends in all directions freely moveably connected to couplings 40 and 41mounted on pull and press arms 42 and 43, which in turn are freelyturnably journalled at their upper ends on the frame construction 55 at44 and 45, respectively. The handles 46 are provided at the lower endsof the arms 42 and 43. The turning arms 36 are journalled on a commonthrough shaft 47 fastened at the frame construction 55. The turning arms36 are freely journalled independently of each other on the shaft 47. Astop 47 a restrains the movements of the turning arms in one directionof rotation.

A hydraulic cylinder device 25 is pivotally mounted between the lowerframe 6 and the tiltable frame 30. By activating the cylinder device 25,the inner frame 30 of the weight section 2 is arranged to rotate aboutthe pivot pins 9 and 10, as is best evident from FIGS. 15 and 16. Thehydraulic cylinder device 25 is shown as an example of a device to turnthe inner frame 30 in relation to the outer frame consisting of beams 6and 11-16. Other known devices to perform this work can of course beused within the frame of the appended claims, as, e.g., a linear electromotor etc.

A person who shall train using the strength training device 1 accordingto the invention sets on the chair 52 and then grips the handles 46 onthe arms 42 and 43, as is evident from FIGS. 1 and 3. To facilitate thepositive movement, i.e., the person presses the arms 42 and 43 outwardlyfrom the body, the inner frame is then turned to a position according toFIG. 16 so that the power which is required to lift the upper weightpackage 1 is reduced by the inclination of the inner frame 30, whereasthe weight package V₁₋₃ slides against the weight V₄ along a layer 65 ofa low friction material, as plastics or nylon, which is provided onweights V₁₋₉ (see FIGS. 6 and 10). A reduction of the power which isrequired to press the handles forwards can be reduced with up to over50%.

The positive power which is required to lift the weights will besubstantially less than the negative force, i.e., in the order of morethan 30%, more precisely about 40%. When the person begins the negativemovement, i.e., the person moves the arms 42 and 43 inwardly towards thebody to a stop/start position where the stop 47 a abuts against theframe construction 55, the frame 30 is turned back to its originalposition (see FIG. 15) in which the person achieves full load from theselected weight package V₁₋₃. Turning the frame 30 by means of thecylinder device 25 occurs suitably automatically by means of a controlunit (not shown) which via censors senses the movement of the belts 22and 23 and turns the frame 30 from the position in FIG. 15 to inclinethe weight package V₁₋₃ upwards and to the position shown in FIG. 16.

FIG. 8 shows another embodiment of the training machine 1 according tothe invention which instead of one wheel 51 has two wheels 56 and 57mounted for rotation on the shaft 7 with corresponding two belts 58, 59attached to the U-formed member A/B. In this embodiment the wheel 16′takes up differences in belt tensions between the belt parts 58 and 59.

In FIG. 9-12 a further embodiment of the training machine 1 according tothe invention is shown. This embodiment differs in that the selection ofweights is different. Instead of the pin member C a weight selectionstick 60 is used. The stick 60 is provided with a knob 61 at its end andhas recesses 62 to be engaged by a ball/spring clutch 63 to hold thestick in the chosen position. On the stick there are markings 64displaying the weight of the selected weight package which in this caseis shown as V₁₋₃ (see FIG. 10). Each weight V₁₋₁₀ has a through hole 66.The holes 66 are flush with each other when the weights V₁₋₁₀ are in therest position on the rest plate 8. When weights V₁₋₁₀ are lifted bymeans of the belt 22, the selected weights V₁₋₃ slide on a disc 65 oflow friction fixed to one side of the outermost weight V₃. Each weightV₁₋₉ has such a low friction disc 66 fixed to one side to facilitatelifting of the weight package when the frame 30 is inclined by means ofthe hydraulic cylinder device 25. The stick 60 is accordingly insertedinto the holes 66 until the marking 64 closest to the disc shows theselected total weight of the selected weight package V₁₋₃, i.e., 30 kiloin the shown example.

In FIG. 13 is shown another embodiment of the training machine 1according to the invention which instead of one wheel 51 has two wheels55 and 56 mounted for rotation on the shaft 7 with corresponding twobelts attached to the U-formed member A/B. In this embodiment the wheel16′ takes up differences in belt tensions between the belt parts 58 and59.

FIG. 14-16 shows yet another embodiment of the training machine 1according to the invention wherein the weight section 2 is mountedbehind the training section 3 and the belt 22 is connected at 16 to thebelt 23 which is lead over a pulley 18 and a further pulley 19 to theequalisation device on the training section 3.

FIGS. 15 and 16 show the tilting of the weight package frame 30 by meansof the hydraulic cylinder device 25. In FIG. 15 it is shown the positionof the frame 30 carrying the weights during the negative motion of thetraining person, and in FIG. 16 during the positive motion when theweights are inclined. In FIG. 16 the weight section is tilted about 45°,but this is only by way of example, and in fact the inclination dependson the desired reduction of weight.

At the shown and above described preferred embodiment of the trainingmachine 1 according to the invention it is achieved that the trainedperson is given the possibility to either lift more weights than what ispossible by means of conventional known machine or lift more times withthe same weight as was earlier used.

In the embodiments a total number of ten weights are shown. It isevident that this number can be changed within the scope of the appendedclaims. The selection of weights is exemplified in the drawings whereinthe weights are selected from one side. It should also be possible toselect weights in another order and then provide each weight disc with adifferent weight. One such selection device could be the provision of aset of pins which are introduced in holes without having the catchingprotrusions. In another embodiment a predetermined number of protrusionsare provided in which case the weights are divided in groups wherebyeach group has one pin for the selection of weights. In a development ofthe machine according to the invention the selection of weights in theweight package to be lifted could be achieved automatically by means ofa weight selection device connected to the weight selection device. Thepin could also be provided with a lock which by turning the pin wouldlock the weight to the lifting portion (in the former embodiments markedwith B). The training section 3 of the training machine can be of anyother known kind of exercise machine as a leg extension, an abdominalcurl, a row exercise machine or a biceps curl

The training machine 1 according to the invention can be modified withinthe scope of the appended claims wherein special features from thedifferent embodiments could be combined.

1. A training machine for strength training and rehabilitationcomprising: a machine frame; a weight carrying frame; a weight packagecarried by said weight carrying frame, pull or press means which areturnably provided on said machine frame and which are arranged to bemoved backwards and forwards while a selected pre-determined number ofweights in said weight package is arranged to be turned about a firstaxis, alternatively, by connection means connected to said pull or pressmeans, and drive means for lifting said pre-determined number of weightsin a continuous movement by a first force against said pull or pressmeans and for lowering said pre-determined number of weights by a secondforce against said pull or press means, said first force being less thansaid second force, wherein said weight carrying frame is turnable onsaid machine frame about a substantially horizontal second axis and inthat said first and second axes are substantially perpendicular to eachother.
 2. Training machine according to claim 1, wherein said secondaxis is substantially parallel to a lower substantial horizontal sidebeam of the machine frame.
 3. Training machine according to claim 1,wherein two pivot pins are journalled in bearings between the machineframe and the weight carrying frame and are provided along said secondaxis on both sides of said weight carrying frame.
 4. Training machineaccording to claim 1, wherein said drive means is a motor, as ahydraulic cylinder device, said driving means being arranged to move theweights backwards and forwards from a pre-determined inclined positionand a substantially vertical position, whereby the weight carrying frameis turned about said pivot pins.
 5. Training machine according to claim1, wherein said first power is substantially less than said secondpower, i.e., in the order of more than 30%, more precisely about 40%. 6.Training machine according to claim 1, wherein said connection means areconstituted of at least one non-elastic wire or belt, preferably of thematerial Kevlar®, said belt being connected between said pull or pressmeans and said pre-determined number of weights via a lever system andfreely journalled pulleys arranged on the machine.
 7. Training machineaccording to claim 6, wherein the material Kevlar® is led over aplurality of rolls, wherein a wheel takes up differences in belttensions between the belt parts.